"-si" meaning in Old Irish

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ga",
            "2": "-sa"
          },
          "expansion": "Irish: -sa",
          "name": "desc"
        }
      ],
      "text": "Irish: -sa"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gv",
            "2": "-ish",
            "3": "-sh"
          },
          "expansion": "Manx: -ish, -sh",
          "name": "desc"
        }
      ],
      "text": "Manx: -ish, -sh"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gd",
            "2": "-se"
          },
          "expansion": "Scottish Gaelic: -se",
          "name": "desc"
        }
      ],
      "text": "Scottish Gaelic: -se"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "cat2": "emphatic suffixes",
        "cat3": "",
        "g": "",
        "g2": ""
      },
      "expansion": "-si",
      "name": "head"
    },
    {
      "args": {
        "1": "e"
      },
      "expansion": "-si",
      "name": "sga-suffix"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "related": [
    {
      "_dis1": "0 0",
      "tags": [
        "singular"
      ],
      "word": "1"
    },
    {
      "_dis1": "0 0",
      "word": "-se"
    },
    {
      "_dis1": "0 0",
      "word": "-sa"
    },
    {
      "_dis1": "0 0",
      "tags": [
        "singular"
      ],
      "word": "2"
    },
    {
      "_dis1": "0 0",
      "word": "-siu"
    },
    {
      "_dis1": "0 0",
      "word": "-so"
    },
    {
      "_dis1": "0 0",
      "word": "-su"
    },
    {
      "_dis1": "0 0",
      "tags": [
        "masculine",
        "neuter"
      ],
      "word": "3"
    },
    {
      "_dis1": "0 0",
      "word": "-som"
    },
    {
      "_dis1": "0 0",
      "word": "-sem"
    },
    {
      "_dis1": "0 0",
      "word": "-sium"
    },
    {
      "_dis1": "0 0",
      "word": "-sum"
    },
    {
      "_dis1": "0 0",
      "word": "-sam"
    },
    {
      "_dis1": "0 0",
      "tags": [
        "feminine"
      ],
      "word": "3"
    },
    {
      "_dis1": "0 0",
      "tags": [
        "plural"
      ],
      "word": "1"
    },
    {
      "_dis1": "0 0",
      "word": "-ni"
    },
    {
      "_dis1": "0 0",
      "word": "-nai"
    },
    {
      "_dis1": "0 0",
      "word": "-sni"
    },
    {
      "_dis1": "0 0",
      "tags": [
        "plural"
      ],
      "word": "2"
    },
    {
      "_dis1": "0 0",
      "tags": [
        "plural"
      ],
      "word": "3"
    }
  ],
  "senses": [
    {
      "glosses": [
        "her (emphatic)"
      ],
      "id": "en--si-sga-suffix-NZVpgayP",
      "links": [
        [
          "her",
          "her"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "16 84",
          "kind": "other",
          "name": "Old Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "It will not be merely a passing visit to you pl, but I will remain with you, for you are not perfect; the Macedonians, however, are perfect.",
          "text": "Níba cuit adíll ⁊ cucuibsi, acht ainfa lib, ar nídad foirbthi-si; it foirbthi immurgu Macidonii.",
          "type": "example"
        },
        {
          "english": "You will pray to God for us so that we may endure our sufferings.",
          "text": "Gigeste-si Día linn ara·fulsam ar fochidi.",
          "type": "example"
        },
        {
          "english": "I am boasting about you to the Macedonians.",
          "text": "Bíuu-sa oc irbáig dar far cenn-si fri Maccidóndu.",
          "type": "example"
        }
      ],
      "glosses": [
        "you (plural; emphatic)"
      ],
      "id": "en--si-sga-suffix-7DCipIHv",
      "links": [
        [
          "you",
          "you"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sʲi]"
    }
  ],
  "word": "-si"
}

{
  "categories": [
    "Old Irish emphatic suffixes",
    "Old Irish entries with incorrect language header",
    "Old Irish lemmas",
    "Old Irish suffixes",
    "Pages using catfix",
    "Pages with 17 entries",
    "Pages with entries"
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ga",
            "2": "-sa"
          },
          "expansion": "Irish: -sa",
          "name": "desc"
        }
      ],
      "text": "Irish: -sa"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gv",
            "2": "-ish",
            "3": "-sh"
          },
          "expansion": "Manx: -ish, -sh",
          "name": "desc"
        }
      ],
      "text": "Manx: -ish, -sh"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gd",
            "2": "-se"
          },
          "expansion": "Scottish Gaelic: -se",
          "name": "desc"
        }
      ],
      "text": "Scottish Gaelic: -se"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "cat2": "emphatic suffixes",
        "cat3": "",
        "g": "",
        "g2": ""
      },
      "expansion": "-si",
      "name": "head"
    },
    {
      "args": {
        "1": "e"
      },
      "expansion": "-si",
      "name": "sga-suffix"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "related": [
    {
      "tags": [
        "singular"
      ],
      "word": "1"
    },
    {
      "word": "-se"
    },
    {
      "word": "-sa"
    },
    {
      "tags": [
        "singular"
      ],
      "word": "2"
    },
    {
      "word": "-siu"
    },
    {
      "word": "-so"
    },
    {
      "word": "-su"
    },
    {
      "tags": [
        "masculine",
        "neuter"
      ],
      "word": "3"
    },
    {
      "word": "-som"
    },
    {
      "word": "-sem"
    },
    {
      "word": "-sium"
    },
    {
      "word": "-sum"
    },
    {
      "word": "-sam"
    },
    {
      "tags": [
        "feminine"
      ],
      "word": "3"
    },
    {
      "tags": [
        "plural"
      ],
      "word": "1"
    },
    {
      "word": "-ni"
    },
    {
      "word": "-nai"
    },
    {
      "word": "-sni"
    },
    {
      "tags": [
        "plural"
      ],
      "word": "2"
    },
    {
      "tags": [
        "plural"
      ],
      "word": "3"
    }
  ],
  "senses": [
    {
      "glosses": [
        "her (emphatic)"
      ],
      "links": [
        [
          "her",
          "her"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        "Old Irish terms with quotations"
      ],
      "examples": [
        {
          "english": "It will not be merely a passing visit to you pl, but I will remain with you, for you are not perfect; the Macedonians, however, are perfect.",
          "text": "Níba cuit adíll ⁊ cucuibsi, acht ainfa lib, ar nídad foirbthi-si; it foirbthi immurgu Macidonii.",
          "type": "example"
        },
        {
          "english": "You will pray to God for us so that we may endure our sufferings.",
          "text": "Gigeste-si Día linn ara·fulsam ar fochidi.",
          "type": "example"
        },
        {
          "english": "I am boasting about you to the Macedonians.",
          "text": "Bíuu-sa oc irbáig dar far cenn-si fri Maccidóndu.",
          "type": "example"
        }
      ],
      "glosses": [
        "you (plural; emphatic)"
      ],
      "links": [
        [
          "you",
          "you"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[sʲi]"
    }
  ],
  "word": "-si"
}